package org.example.jdbc;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Scanner;
/**
 * 登录功能:
 * 用户输入用户名和密码;
 * 返回结果:
 *   1.登录成功,欢迎您:昵称;
 *   2.用户名或者密码错误;
 * SELECT nickname FROM userinfo WHERE username='' AND password=''
 */
public class JDBCLogin {
    public static void main(String[] args) {
        try(Connection connection = DBUtil.getConnection();) {
            //接收用户名和密码
            Scanner scanner = new Scanner(System.in);
            System.out.println("用户名：");
            String username = scanner.nextLine();
            System.out.println("密码：");
            String password = scanner.nextLine();
            //执行sql
            Statement statement = connection.createStatement();
            String sql = "SELECT nickname FROM userinfo WHERE username = '"+username+"' AND '"+password+"' ";
            ResultSet resultSet = statement.executeQuery(sql);
            if (resultSet.next()){
                String nickname = resultSet.getString("nickname");
                System.out.println("登陆回来，doctor"+nickname);
            }else {
                System.out.println("用户名或密码错误");
            }
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }
}
